WO2013077004A1 - 伝動ベルト - Google Patents

伝動ベルト Download PDF

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Publication number
WO2013077004A1
WO2013077004A1 PCT/JP2012/052221 JP2012052221W WO2013077004A1 WO 2013077004 A1 WO2013077004 A1 WO 2013077004A1 JP 2012052221 W JP2012052221 W JP 2012052221W WO 2013077004 A1 WO2013077004 A1 WO 2013077004A1
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WO
WIPO (PCT)
Prior art keywords
rubber
tooth
transmission belt
belt
core wire
Prior art date
Application number
PCT/JP2012/052221
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
山田充宏
阪本圭司
内ヶ島真二
Original Assignee
ゲイツ・ユニッタ・アジア株式会社
ザ ゲイツ コーポレーション
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP12852185.3A priority Critical patent/EP2784346B1/en
Application filed by ゲイツ・ユニッタ・アジア株式会社, ザ ゲイツ コーポレーション filed Critical ゲイツ・ユニッタ・アジア株式会社
Priority to BR112014012264-4A priority patent/BR112014012264B1/pt
Priority to MX2014006006A priority patent/MX2014006006A/es
Priority to CN201280011163.9A priority patent/CN103403389B/zh
Priority to PL12852185T priority patent/PL2784346T3/pl
Priority to RU2014125256/11A priority patent/RU2588549C2/ru
Priority to KR1020137006010A priority patent/KR101927274B1/ko
Priority to ES12852185T priority patent/ES2695103T3/es
Priority to US14/359,565 priority patent/US9140329B2/en
Priority to CA2856274A priority patent/CA2856274C/en
Publication of WO2013077004A1 publication Critical patent/WO2013077004A1/ja
Priority to IL232602A priority patent/IL232602A/en
Priority to ZA2014/03645A priority patent/ZA201403645B/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/06—Driving-belts made of rubber
    • F16G1/08—Driving-belts made of rubber with reinforcement bonded by the rubber
    • F16G1/10—Driving-belts made of rubber with reinforcement bonded by the rubber with textile reinforcement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/06—Driving-belts made of rubber
    • F16G1/08—Driving-belts made of rubber with reinforcement bonded by the rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/06—Driving-belts made of rubber
    • F16G1/08—Driving-belts made of rubber with reinforcement bonded by the rubber
    • F16G1/12—Driving-belts made of rubber with reinforcement bonded by the rubber with metal reinforcement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/28—Driving-belts with a contact surface of special shape, e.g. toothed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G5/00—V-belts, i.e. belts of tapered cross-section
    • F16G5/04—V-belts, i.e. belts of tapered cross-section made of rubber
    • F16G5/06—V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G5/00—V-belts, i.e. belts of tapered cross-section
    • F16G5/20—V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed

Definitions

  • the present invention relates to a transmission belt, and more particularly to a toothed belt used under high temperature and high load environment.
  • toothed belts are widely used for power transmission.
  • toothed belts are increasingly used in high-temperature and high-load environments due to the use environment becoming increasingly hot and narrow due to the downsizing of engines and the like.
  • toothed belts are blended with, for example, short fibers in tooth rubber so that the durability under high load environment is good, and relatively high modulus rubber is used for tooth rubber by so-called pre-molding technology. Is done.
  • the toothed belt has a large amount of tooth deformation and a large amount of internal heat generation under a high temperature environment, so that it is likely to be thermally deteriorated, and the rubber and canvas of the tooth base part are repeatedly stretched greatly and cracks are generated. Easy to enter.
  • canvases, short fibers, core wires, and the like have been subjected to surface treatment with RFL, rubber paste, or the like, and the adhesion between rubber and these members has been enhanced.
  • a resorcin formalin resin or a melamine resin is used as an adhesive rubber in order to increase the adhesive force between the core wire and the adhesive rubber in which the core wire is embedded.
  • Compositions to be blended are also known. JP 2008-261489 A
  • the present invention is used in a high load / high temperature environment by improving the adhesive strength between the rubber and various members while improving the tear strength and the like to improve the strength of the rubber itself even in a high temperature environment.
  • the object is to improve the durability of the belt.
  • the power transmission belt according to the present invention includes a rubber part formed by vulcanizing a rubber composition containing rubber, resorcinol, and a melamine compound.
  • the rubber part is usually bonded to a core wire or canvas, or short fibers are embedded inside.
  • the rubber part has an aramid short fiber embedded therein.
  • the rubber should contain hydrogenated nitrile rubber.
  • the rubber composition preferably further contains silica.
  • at least one of the core wire, the canvas, and the short fiber is subjected to RFL treatment, and the RFL component is attached to the surface thereof.
  • the transmission belt is preferably a toothed belt provided with tooth rubber. And it is preferable that the said rubber part comprises at least one part of tooth rubber.
  • a melamine compound a hexamethoxymethylol melamine compound is used preferably.
  • the hexamethoxymethylol melamine compound is, for example, hexamethoxymethylol melamine, an oligomer that is a partial condensate thereof, or a mixture thereof.
  • the toothed belt covers, for example, a core wire, a tooth rubber disposed on one surface side with respect to the core wire, a back rubber disposed on the other surface side, and the one surface side of the tooth rubber. And a toothbrush that In this case, at least one surface side portion of the tooth rubber is formed by the rubber portion, and the tooth cloth is bonded to the rubber portion.
  • a method for manufacturing a transmission belt according to the present invention is characterized in that a rubber composition including rubber, resorcinol, and a melamine compound is vulcanized to form a rubber portion constituting at least a part of the transmission belt. .
  • the strength of the rubber itself is improved while increasing the adhesive strength of the rubber to the core wire, canvas, short fiber, etc. Durability can be improved.
  • Toothed belt power transmission belt
  • Tooth rubber Back rubber
  • Belt body 14
  • Core wire 20 Tooth cloth (canvas)
  • FIG. 1 shows a toothed belt according to an embodiment of the present invention.
  • the toothed belt 10 is formed in an endless shape and is used by being wound around a driven pulley and a driving pulley (not shown) in, for example, an internal combustion engine.
  • the toothed belt 10 is a timing belt that transmits the torque (driving force) of the driving pulley to the driven pulley by meshing transmission.
  • the toothed belt 10 includes a tooth body 11 provided on one surface side, a belt body 13 formed integrally with a back rubber 12 provided on the other surface side, a tooth rubber 11 and a back rubber 12. And a core wire 14 wound in a spiral shape and extending along the longitudinal direction of the belt. The core wire 14 is bonded to the tooth rubber 11 and the back rubber 12.
  • the tooth rubber 11 is formed by alternately forming tooth portions 15 and tooth bottom portions 16 along the longitudinal direction of the belt on one surface side of the belt main body 13.
  • a tooth cloth (canvas) 20 that covers the tooth rubber 11 (the tooth portion 15 and the tooth bottom portion 16) is bonded to the surface of the tooth rubber 11 (that is, one surface of the belt body 13).
  • the tooth rubber 11 is made of nylon fiber, modified nylon fiber modified with nylon, aramid fiber, and the like, and short fibers 25 having a fiber length of about 0.5 to 10 mm are mixed.
  • the tooth rubber 11 has a higher modulus. Therefore, it is preferable that aramid short fibers are mixed.
  • aramid fibers when aramid fibers are mixed, rubber properties such as adhesive strength between the rubber and the short fibers 25 and tear strength are easily improved by two internal adhesives described later.
  • the short fibers 25 are contained in the tooth rubber 11 in an amount of, for example, about 4 to 36 parts by weight, preferably about 10 to 25 parts by weight, and particularly preferably about 12 to 16 parts by weight with respect to 100 parts by weight of the matrix described later.
  • the short fibers 25 are preferably treated with a treating agent containing a resin component capable of reacting with an internal adhesive, which will be described later, and are preferably treated with, for example, RFL (resorcin-formalin-latex).
  • the RFL treatment is performed by an impregnation treatment in which short fibers are immersed in an RFL treatment solution and then dried by heating.
  • the RFL treatment liquid contains latex and a resorcin / formaldehyde condensate, which are diluted with, for example, water.
  • the resin component may be a urethane resin or an epoxy resin.
  • the short fibers 25 are oriented substantially in the thickness direction of the belt in the central region of the tooth portion 15 and are inclined with respect to the thickness direction so as to be along the tooth surface as approaching the tooth surface from the central region. In the vicinity of the top part of the tooth part 15 and the vicinity of the tooth bottom part 16, it is oriented substantially along the longitudinal direction of the belt.
  • the tooth rubber 11 is formed by vulcanizing a rubber composition containing rubber and various additives.
  • This rubber composition contains hydrogenated nitrile rubber (HNBR) as a main component as a rubber, but may contain other rubber components such as hydrogenated carboxylated nitrile rubber (HXNBR) and nitrile rubber (NBR). .
  • HNBR hydrogenated nitrile rubber
  • HXNBR hydrogenated carboxylated nitrile rubber
  • NBR nitrile rubber
  • the rubber composition for molding the tooth rubber 11 preferably contains an ⁇ , ⁇ -ethylenically unsaturated carboxylic acid metal salt as a matrix in addition to the rubber, but the ⁇ , ⁇ -ethylenically unsaturated The carboxylic acid metal salt may not be contained.
  • the ⁇ , ⁇ -ethylenically unsaturated carboxylic acid metal salt is contained, for example, in an amount of about 0.2 to 0.4 based on the matrix (total weight of rubber and ⁇ , ⁇ -ethylenically unsaturated carboxylic acid metal salt).
  • the ⁇ , ⁇ -ethylenically unsaturated carboxylic acid metal salt is an ion-bonded ⁇ , ⁇ -ethylenically unsaturated carboxylic acid and metal, and examples of the ⁇ , ⁇ -ethylenically unsaturated carboxylic acid include acrylic acid.
  • Monocarboxylic acids such as methacrylic acid, and dicarboxylic acids such as maleic acid, fumaric acid, itaconic acid, citraconic acid and the like, preferably methacrylic acid is used.
  • the metal for example, zinc, magnesium, calcium, barium, titanium, chromium, iron, cobalt, nickel, aluminum, tin, lead and the like are used, and zinc is preferably used.
  • zinc dimethacrylate is used as the metal salt.
  • the rubber composition for molding the tooth rubber 11 further contains resorcinol and a melamine compound as an internal adhesive.
  • resorcinol and a melamine compound as an internal adhesive.
  • a melamine compound or resorcinol is polymerized to build a network structure, and the tear strength of the tooth rubber 11 itself is increased.
  • the adhesive strength of the tooth rubber 11 to the core wire 14, the tooth cloth 20, and the short fiber 25 is also increased.
  • a melamine compound for example, a melamine compound in which at least a part of the amino group is methoxymethylated, specifically, hexamethoxymethylol melamine, an oligomer that is a partial condensate thereof, or a mixture thereof, A hexamethoxymethylol melamine compound is used.
  • a melamine compound preferably has a viscosity at 25 ° C. (according to DIN 19268) of about 3000 to 8000 mPa ⁇ s.
  • Resorcinol is blended in an amount of 0.3 to 8 parts by weight, preferably 0.5 to 4.5 parts by weight, more preferably 1.5 to 3.0 parts by weight, based on 100 parts by weight of the matrix of the rubber composition. .
  • the melamine compound preferably has a smaller amount (weight) than resorcinol, and is 0.2 to 5 parts by weight, preferably 0.3 to 2.7 parts by weight with respect to 100 parts by weight of the matrix of the rubber composition. Parts, more preferably 0.9 to 1.8 parts by weight.
  • the rubber composition for molding the tooth rubber 11 contains silica.
  • silica fine particles or powders are used.
  • formaldehyde is donated from the melamine compound by the moisture contained in the silica, and resorcinol is polymerized by the formaldehyde, and the melamine compound is also polymerized, and as described above, the adhesive strength, tear strength, and the like are improved.
  • Silica is 5 to 50 parts by weight, preferably 20 to 40 parts by weight, based on 100 parts by weight of the matrix of the rubber composition.
  • the rubber composition for molding the tooth rubber 11 further includes known rubber additives such as a vulcanizing agent, a plasticizer, a lubricant, and carbon black as an additive.
  • a vulcanizing agent such as a vulcanizing agent, a plasticizer, a lubricant, and carbon black.
  • an organic peroxide vulcanizing agent is preferably used as the vulcanizing agent.
  • the tooth cloth 20 is not particularly limited, for example, a first thread (for example, weft) extending along the longitudinal direction of the belt and a second thread (for example, warp) extending along the width of the belt are woven. It is a woven fabric constructed.
  • the tooth cloth 20 has, for example, a first thread composed of a stretchable thread and a second thread composed of a non-stretchable thread, and has a stretchability in the longitudinal direction of the belt. It becomes easy to be molded.
  • at least a part of the fibers constituting the tooth cloth 20 is preferably an aramid fiber, for example, at least a part of the first yarn is an aramid fiber. It is preferable.
  • the tooth cloth 20 is subjected to an impregnation process such as an RFL process, if necessary.
  • the rubber composition for molding the tooth rubber 11 is prepared as follows. First, additives of the rubber composition other than vulcanizing agents such as short fibers and silica and internal adhesives (resorcinol and melamine compounds) are kneaded with the rubber preferably at a temperature higher than the following primary kneading. Next, the internal additive adhesive is added and further kneaded (primary kneading). In this primary kneading, the kneading temperature is preferably 100 ° C. or higher, whereby the water content of silica is released into the composition and formaldehyde is easily donated from the melamine compound as described above.
  • a vulcanizing agent is further added to the mixture after the primary kneading, and the mixture is kneaded at a temperature lower than the vulcanizing temperature of the vulcanizing agent (below the kneading temperature of the primary kneading) to obtain a rubber composition (secondary kneading).
  • This rubber composition is formed into a sheet and used as a tooth rubber sheet 11 '(see FIG. 2).
  • the rubber kneading method is not limited to this method, and for example, additives other than the vulcanizing agent may be appropriately added by primary kneading or secondary kneading.
  • the back rubber 12 may be the same as the rubber used for the back rubber of a conventionally known toothed belt, but it is preferable that short fibers are not mixed. Further, the rubber used for the back rubber 12 is preferably composed mainly of HNBR, similarly to the tooth rubber 11, and may contain other rubber components as necessary.
  • the tooth cloth 20 subjected to the impregnation treatment or the like is first preformed into a corrugated shape having tooth portions 23 and tooth bottom portions 24 alternately by a conventionally known method.
  • the tooth rubber sheet 11 ′ is pressure-bonded to one surface of the corrugated tooth cloth 20 to obtain a rubber tooth cloth 26.
  • the tooth rubber sheet 11 ′ is pressed toward the tooth cloth 20, the tooth rubber sheet 11 ′ is pressed relatively thickly on the tooth portion 23, while being pressed relatively thinly on the tooth bottom portion 24.
  • the short fibers 25 mixed in the tooth rubber sheet 11 ' are blended along the longitudinal direction, as is apparent from FIG. It will be oriented in much the same way as the fiber.
  • the rubber-equipped tooth cloth 26 thus obtained is wound around the toothed mold 30.
  • the toothed mold 30 has a cylindrical shape, and concave portions 31 and convex portions 32 are alternately provided on the outer peripheral surface thereof along the circumferential direction, and each tooth portion 23 of the rubberized tooth cloth 26 includes: Arranged inside each recess 31.
  • gum is not normally the shape completely corresponded to the recessed part 31, and there exists a clearance gap between the tooth part 23 and the recessed part 31.
  • the core wire 14 is spirally wound on the tooth rubber sheet 11 ′, and the back rubber sheet 12 ′ is further wound on the core wire 14.
  • the toothed mold 30 is accommodated in a vulcanizer (not shown).
  • the tooth rubber sheet 11 ′ and the back rubber sheet 12 ′ are unvulcanized rubber sheets that become the tooth rubber 11 and the back rubber 12 after vulcanization molding.
  • the rubber tooth cloth 26 wound around the toothed mold 30 is heated by, for example, steam and is directed from the outside to the inside by a vulcanizing bag or the like provided in the vulcanizing pot. Pressurized. By this pressurization and heating, the gap inside the recess 31 is completely eliminated, and the rubber sheets 11 ′, 12 ′ and the like are vulcanized, whereby the tooth cloth 20, the rubber sheets 11 ′, 12 ′, and the core wire 14. Are integrated to form a belt slab.
  • the belt slab is removed from the toothed mold 30, appropriately polished, and then cut into a predetermined width, thereby forming the toothed belt 10 (see FIG. 1).
  • the tooth rubber 11 includes the core wire 14 and the tooth cloth 20 while the strength of the rubber itself, such as the tear strength, is increased by blending the above-mentioned two internal adhesives.
  • the adhesive strength to the short fibers 25 is also increased, and the durability of the belt is improved even under a high temperature and high load environment.
  • FIG. 3 shows a toothed belt according to the second embodiment of the present invention.
  • the second embodiment is the same as the first embodiment except for the configuration of the tooth rubber.
  • differences of the first embodiment from the first embodiment will be described.
  • the tooth rubber 11 occupies most of the tooth portion 15 and is laminated on the back rubber 12 and has a shape corresponding to the shape of the tooth portion 15 and the core rubber.
  • the thin tooth surface rubber portion 38 is laminated on the portion 37 and disposed on the surface of the tooth rubber 11. Then, the tooth cloth 20 is covered and bonded to the outer peripheral surface of the tooth surface rubber portion 38.
  • the tooth surface rubber portion 38 is formed by the same rubber composition as the tooth rubber 11 in the first embodiment except that the short fiber is not blended. That is, the tooth surface rubber part 38 is molded by a rubber composition in which silica, resorcinol, a melamine compound and the like are blended. On the other hand, the core rubber part 37 is molded by a rubber composition having the same composition as the tooth rubber 11 of the first embodiment except that the resorcinol and melamine compounds are not blended. In addition, since the material, orientation, etc. of the short fiber 25 in a core rubber part are the same as that of 1st Embodiment, the description is abbreviate
  • the adhesive strength between the tooth rubber 11 and the tooth cloth 20 is improved, and the vicinity of the tooth surface. It is possible to improve the rubber strength of the tooth rubber 11. Further, since the tooth surface rubber 38 is provided, the adhesion between the tooth cloth 20 and the tooth rubber 11 is not hindered by the short fibers, and the adhesion strength can be further improved.
  • the core rubber portion 37 may also be molded by a rubber composition in which resorcinol, a melamine compound, and the like are blended, like the tooth surface rubber portion 38.
  • the manufacturing method of the toothed belt in the present embodiment is the same as that of the first embodiment except that the rubber sheet to be pressure-bonded to the tooth cloth becomes two layers (tooth surface rubber sheet and core rubber sheet). Since there is, the description is abbreviate
  • the rubber constituting the tooth rubber 11 and the back rubber 12 may contain rubber components other than the above-described HNBR, NBR, HXNBR such as EPDM (ethylene-propylene-diene copolymer).
  • a rubber component other than HNBR may be used as a main component.
  • the tooth cloth 20 and the core wire 14 are also resin components that can react with the internally added adhesive on the surface of the tooth cloth 20 and the core wire 14 by performing, for example, RFL treatment or the like. It is preferable that is attached.
  • the hexamethoxymethylol melamine compound used was an oligomer having a viscosity at 25 ° C. (according to DIN 19268) of 5500 mPa ⁇ s and a partial condensate of hexamethoxymethylol melamine.
  • Tear Strength (TR) Under the same vulcanization conditions as the tensile stress (TS b ) at the time of cutting, a vulcanized rubber sample “angle-shaped test piece without incision” was prepared from the rubber compositions of Examples and Comparative Examples. Using this rubber sample, the tear strength (TR) was measured in a normal environment (23 ° C.) and a hot environment (120 ° C.) in accordance with JIS K6252.
  • the warp is a non-stretchable yarn composed of a filament filament of 110 dtex nylon
  • the weft is a para-aramid fiber yarn (trade name. Technora) of 220 dtex around a core yarn composed of a 470 dtex urethane elastic yarn. )
  • the weft thread was extended along the longitudinal direction of the sample, and the running direction of the short fibers was the longitudinal direction of the sample.
  • Example 1 and Comparative Example 1 a toothed belt was created in accordance with the first embodiment and performance evaluation was performed as follows. Specifically, a tooth cloth similar to the tooth cloth used in the adhesion test was similarly RFL-treated, and then pre-formed into a corrugated shape so that the wefts were along the belt longitudinal direction, and the composition shown in Table 1 was used. A tooth rubber sheet made of the rubber composition having the rubber composition was pressure-bonded to the tooth cloth to obtain a tooth cloth with rubber. Next, a toothed mold, a rubber toothpaste, a glass core wire, and a back rubber sheet were wound in this order, and these were vulcanized and molded in a vulcanizer to obtain a belt slab.
  • This belt slab was cut to obtain a toothed belt having an RU tooth profile with 92 teeth and a belt width of 19.1 mm.
  • the back rubber sheet was made of the same rubber composition containing HNBR as a rubber component and not containing short fibers or an internal adhesive.
  • FIG. 4 shows a running test apparatus 90 used for the high load durability test.
  • the traveling test apparatus 90 includes a pulley 91 with a driven tooth having 18 teeth, a pulley 92 with a driven tooth having 36 teeth, an idler pulley 93 having a pulley diameter of 55 mm, and an idler tooth having 18 teeth.
  • a pulley 94 is provided.
  • the toothed belt 95 was wound around the pulley 91 with the driven tooth and the pulley 92 with the driven tooth, and the toothed belt 95 was rotated at 4000 rpm in an atmosphere of 100 ° C.
  • tension was applied by an idler pulley 93 from the outside and an idler toothed pulley 94 from the inside.
  • a constant load was repeatedly applied to each tooth of the belt by the driven toothed pulley 92.
  • durability was evaluated by measuring the number of repeated loads until the belt was missing a tooth. The result is shown in FIG.
  • Example 1 and Comparative Example 1, Example 2 and Comparative Example 2, and Example 8 and Comparative Example 3 were compared, an internal additive (resorcinol and hexagonal) was added to the rubber composition.
  • methoxymethylol melamine compound methoxymethylol melamine compound
  • this tendency was the same not only when the rubber component was HNBR alone but also when it was a mixture of HNBR and HXNBR.
  • the rubber properties such as tear strength and peel strength are improved, the durability of the belt used in a high load / high temperature environment as shown in the results of the high load durability test in FIG. Can be improved.
  • the amount of short fibers is more than 10 parts by weight.
  • the peel strength tends to decrease slightly when the amount of short fibers exceeds 10 parts by weight. Considering both the rubber physical properties and the peel strength, it is considered most effective to add about 12 to 16 parts by weight of the short fiber. The reason why the peel strength decreased when the amount of short fibers was increased is presumed that the adhesive in the rubber near the canvas or the core wire was consumed much in the reaction with the RFL of the short fibers.
  • Example 2 resorcinol 1.5 parts by weight, melamine compound 0.9 parts by weight
  • the hot tear strength peaked at the compounding amount of Example 5 (3.0 parts by weight of resorcinol, 1.8 parts by weight of melamine compound), and gradually decreased as the amount was further increased. Therefore, in this example, considering rubber physical properties, it is most effective to add about 0.9 to 1.8 parts by weight of melamine compound and about 1.5 to 3.0 parts by weight of resorcinol in the rubber composition. It is thought that.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
PCT/JP2012/052221 2011-11-21 2012-02-01 伝動ベルト WO2013077004A1 (ja)

Priority Applications (12)

Application Number Priority Date Filing Date Title
RU2014125256/11A RU2588549C2 (ru) 2011-11-21 2012-02-01 Приводной ремень
BR112014012264-4A BR112014012264B1 (pt) 2011-11-21 2012-02-01 Correia de transmissão de energia e método de fabricação de umacorreia de transmissão de energia
MX2014006006A MX2014006006A (es) 2011-11-21 2012-02-01 Banda de transmision.
CN201280011163.9A CN103403389B (zh) 2011-11-21 2012-02-01 传动带
PL12852185T PL2784346T3 (pl) 2011-11-21 2012-02-01 Pas pędniany
EP12852185.3A EP2784346B1 (en) 2011-11-21 2012-02-01 Transmission belt
KR1020137006010A KR101927274B1 (ko) 2011-11-21 2012-02-01 전동 벨트
CA2856274A CA2856274C (en) 2011-11-21 2012-02-01 Transmission belt
US14/359,565 US9140329B2 (en) 2011-11-21 2012-02-01 Transmission belt
ES12852185T ES2695103T3 (es) 2011-11-21 2012-02-01 Correa de transmisión
IL232602A IL232602A (en) 2011-11-21 2014-05-13 Power transfer belt
ZA2014/03645A ZA201403645B (en) 2011-11-21 2014-05-20 Transmission belt

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011253958A JP5885240B2 (ja) 2011-11-21 2011-11-21 伝動ベルト
JP2011-253958 2011-11-21

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WO2013077004A1 true WO2013077004A1 (ja) 2013-05-30

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PCT/JP2012/052221 WO2013077004A1 (ja) 2011-11-21 2012-02-01 伝動ベルト

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IL232602A (en) 2016-12-29
ZA201403645B (en) 2015-11-25
BR112014012264B1 (pt) 2021-06-15
EP2784346A4 (en) 2015-09-09
CN103403389B (zh) 2016-09-07
IL232602A0 (en) 2014-06-30
RU2014125256A (ru) 2015-12-27
PL2784346T3 (pl) 2019-03-29
CN103403389A (zh) 2013-11-20
EP2784346A1 (en) 2014-10-01
ES2695103T3 (es) 2019-01-02
BR112014012264A2 (pt) 2017-06-20
MX2014006006A (es) 2014-08-01
EP2784346B1 (en) 2018-10-17
US9140329B2 (en) 2015-09-22
JP5885240B2 (ja) 2016-03-15
KR101927274B1 (ko) 2018-12-10
CA2856274C (en) 2016-08-16
US20140287862A1 (en) 2014-09-25
JP2013108564A (ja) 2013-06-06
KR20140093599A (ko) 2014-07-28
CA2856274A1 (en) 2013-05-30

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